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Product Shelf-Life

The table below lists shelf-life expectations for Cell Signaling Technology (CST) products. CST products can be expected to perform at optimal levels during the shelf-life period when stored under the recommended conditions. The product you receive will have one of two dates listed on its packaging. If the date is preceded by “Ref:”, then it is a “Reference Date”. This date indicates the date (month and year) that the product was filled or packaged. Vial filling and packaging dates are not always the same. For single component products such as individual antibodies, the starting point for the expected shelf-life is indicated by the reference date printed on the vial label. For multi-component kit products the reference date printed on the barcoded kit box label indicates the starting point for the expected shelf-life. If the date is preceded by “Best:”, then it is a “Best By” date. This date indicates the end point of the shelf life of the product. Please expect the product to perform at optimal levels until this date, as long as it is stored under the recommended conditions.

Product Type Shelf-Life (Months)
Product Type Shelf-Life (Months)
Antibodies – Unconjugated 60*
Antibodies – BSA and Azide Free 36
Antibodies – Biotinylated 24
Antibodies – Dye Conjugated 24*
Antibodies – HRP-linked 24
Antibodies – Immobilized 24
Secondary Antibodies – Dye Conjugated 12*
Secondary Antibodies – HRP- and AP-linked 24*
Secondary Antibodies – Biotinylated or Immobilized 24
Assay Kits 12*
Blocking Peptides 60
Buffers 24*
cAMP/cGMP Assay Kits 36
Cell Extracts & Tissue Extracts 6*
Cellular Dyes 24*
Chemical Modulators 24*
CUT&RUN Kit and Reagents 12
Cytokines and Growth Factors 12†
FastScan™ ELISA Kits 12
PathScan® ELISA Antibody Pairs 12
PathScan® ELISA Kits 12
IHC Control Slides 2
IHC Kits – Prediluted Antibodies 6
LumiGlo® & SignalFire™ ECL Reagents 12
Protein MW Markers 24
Protein Controls 6*
PTMScan® Kits 60*
PTMScan® HS Kits 12
Recombinant Proteins (except protein controls, cytokine, growth factors) 36
Senescence Staining Kit #9860 24
SignalSilence® siRNAs 24
SignalStain® Boost IHC Detection Reagents #8114, #8125, #18653, #31926 12
SimpleChIP® ChIP Kits 12
SimpleChIP® Primers 24

* Unless otherwise noted on the product data sheet (refer to 'Storage' section of data sheet information

† This is the stability while material is still lyophilized. Stability after solubilization can be found on product data sheet.

If you would like to know the expected shelf-life of a product that is not listed in this table please contact Technical Support.